Messages in this thread Patch in this message | | | From | Sean Anderson <> | Subject | [net-next PATCH 2/2] net: macb: Use mdio child node for MDIO bus if it exists | Date | Fri, 22 Oct 2021 12:35:48 -0400 |
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This allows explicitly specifying which children are present on the mdio bus. Additionally, it allows for non-phy MDIO devices on the bus.
Signed-off-by: Sean Anderson <sean.anderson@seco.com> ---
drivers/net/ethernet/cadence/macb_main.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index 029dea2873e3..30a65cac9e87 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -898,6 +898,17 @@ static int macb_mdiobus_register(struct macb *bp) { struct device_node *child, *np = bp->pdev->dev.of_node; + /* If we have a child named mdio, probe it instead of looking for PHYs + * directly under the MAC node + */ + child = of_get_child_by_name(np, "mdio"); + if (np) { + int ret = of_mdiobus_register(bp->mii_bus, child); + + of_node_put(child); + return ret; + } + if (of_phy_is_fixed_link(np)) return mdiobus_register(bp->mii_bus); -- 2.25.1
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